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19 package org.eclipse.jetty.plus.annotation;
20
21 import java.util.Collections;
22 import java.util.HashSet;
23 import java.util.Set;
24 import java.util.concurrent.TimeUnit;
25
26 import javax.servlet.ServletContainerInitializer;
27
28 import org.eclipse.jetty.util.ConcurrentHashSet;
29 import org.eclipse.jetty.util.Loader;
30 import org.eclipse.jetty.util.log.Log;
31 import org.eclipse.jetty.util.log.Logger;
32 import org.eclipse.jetty.webapp.WebAppContext;
33
34 public class ContainerInitializer
35 {
36 private static final Logger LOG = Log.getLogger(ContainerInitializer.class);
37
38 final protected ServletContainerInitializer _target;
39 final protected Class[] _interestedTypes;
40 protected Set<String> _applicableTypeNames = new ConcurrentHashSet<String>();
41 protected Set<String> _annotatedTypeNames = new ConcurrentHashSet<String>();
42
43
44 public ContainerInitializer (ServletContainerInitializer target, Class[] classes)
45 {
46 _target = target;
47 _interestedTypes = classes;
48 }
49
50 public ServletContainerInitializer getTarget ()
51 {
52 return _target;
53 }
54
55 public Class[] getInterestedTypes ()
56 {
57 return _interestedTypes;
58 }
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65
66 public void addAnnotatedTypeName (String className)
67 {
68 _annotatedTypeNames.add(className);
69 }
70
71 public Set<String> getAnnotatedTypeNames ()
72 {
73 return Collections.unmodifiableSet(_annotatedTypeNames);
74 }
75
76 public void addApplicableTypeName (String className)
77 {
78 _applicableTypeNames.add(className);
79 }
80
81 public Set<String> getApplicableTypeNames ()
82 {
83 return Collections.unmodifiableSet(_applicableTypeNames);
84 }
85
86
87 public void callStartup(WebAppContext context)
88 throws Exception
89 {
90 if (_target != null)
91 {
92 Set<Class<?>> classes = new HashSet<Class<?>>();
93
94 ClassLoader oldLoader = Thread.currentThread().getContextClassLoader();
95 Thread.currentThread().setContextClassLoader(context.getClassLoader());
96
97 try
98 {
99 for (String s : _applicableTypeNames)
100 classes.add(Loader.loadClass(context.getClass(), s));
101
102 context.getServletContext().setExtendedListenerTypes(true);
103 if (LOG.isDebugEnabled())
104 {
105 long start = System.nanoTime();
106 _target.onStartup(classes, context.getServletContext());
107 LOG.debug("ContainerInitializer {} called in {}ms", _target.getClass().getName(), TimeUnit.MILLISECONDS.convert(System.nanoTime()-start, TimeUnit.NANOSECONDS));
108 }
109 else
110 _target.onStartup(classes, context.getServletContext());
111 }
112 finally
113 {
114 context.getServletContext().setExtendedListenerTypes(false);
115 Thread.currentThread().setContextClassLoader(oldLoader);
116 }
117 }
118 }
119 }